Patents by Inventor Yoshino Matsumoto

Yoshino Matsumoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Acoustic transducer
    Patent number: 10948619
    Abstract: An acoustic transducer is provided. The acoustic transducer includes a housing, a backing, a piezocomposite element adjacent the backing within the housing, and a diaphragm covering on an outward facing surface of the piezocomposite element.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: March 16, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yoshino Matsumoto, Kiyomitsu Hikida
  • Downhole caliper using multiple acoustic transducers
    Patent number: 10281607
    Abstract: A downhole tool for real-time caliper measurements is provided. The downhole tool comprises multiple acoustic transducers mounted at different positions of the tool, and a control system. The control system drives the multiple transducers, receives pressure echo signals from the transducers, records the pressure echo signals in the memory, extracts data of two-way transit time and echo amplitude from the echo signals, and computes at least one of a borehole diameter, a tool center position, and an acoustic slowness or velocity of downhole fluid, based on the data of transit time and echo amplitude.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: May 7, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Hiroshi Hori, Yoshino Matsumoto, Kojiro Nishimiya, Kiyomitsu Hikida, Jean-Christophe Auchere
  • ACOUSTIC TRANSDUCER
    Publication number: 20180275305
    Abstract: An acoustic transducer is provided. The acoustic transducer includes a housing, a backing, a piezocomposite element adjacent the backing within the housing, and a diaphragm covering on an outward facing surface of the piezocomposite element.
    Type: Application
    Filed: September 29, 2016
    Publication date: September 27, 2018
    Inventors: Yoshino Matsumoto, Kiyomitsu Hikida
  • Downhole Caliper Using Multiple Acoustic Transducers
    Publication number: 20170115423
    Abstract: A downhole tool for real-time caliper measurements is provided. The downhole tool comprises multiple acoustic transducers mounted at different positions of the tool, and a control system. The control system drives the multiple transducers, receives pressure echo signals from the transducers, records the pressure echo signals in the memory, extracts data of two-way transit time and echo amplitude from the echo signals, and computes at least one of a borehole diameter, a tool center position, and an acoustic slowness or velocity of downhole fluid, based on the data of transit time and echo amplitude.
    Type: Application
    Filed: October 26, 2016
    Publication date: April 27, 2017
    Inventors: Hiroshi Hori, Yoshino Matsumoto, Kojiro Nishimiya, Kiyomitsu Hikida, Jean-Christophe Auchere